Wrench.



No. 754,633. PATENTBD MAR. 15, 1904;

L. ASH s H. B. STEWART.

WRENCH.v

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N 0 M 0 D E L.

-lsatented March 15, 1904; i

UNITED STATES PATENT OFFICE.

LEWIS YASH AND HIEAM B. STEWART, or H-AssEL, MONTANA.

WRENCHi sPncrFicATIN forming part sf Letters Patent N. varese, dated March is, 1964'.

Application met April is, i903.

T all whom it may concern/.- Y Beit known that we, LEwIs ASH and HIRAM B. STEwAR'n'citizens of the United States, re-

siding at Hassel, in the county of Broadwater and State of lMontana, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

he purpose of this invention is yto provide a wrench which is adapted to be quickly adto justed to that to which same is applied and readily susceptible of quick removal by proper manipulation of the parts.

The wrench is of the type embodying the use of a toothed shank and a cooperating element upon an adjustable jaw member, whereby the said jaw may be freely moved toward a fixed jaw provided upon the shank and locked in an ascertained position with relation to the said jaw. zo The invention contemplates a peculiar form of shank and cooperating locking element which are of such a structure that the cooperating parts may be quickly removed and replaced should breakage occur or for other rea- 2 5 Sons. v

For a full description ofthe invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had 3o to the following description and drawings hereto attached.

While the essential and characteristic features of the invention are susceptible of modiiication, still the preferred embodiment of the 3 5 invention is illustrated inthe accompanying drawings, in which- Figure 1 is a longitudinal sectional view through the wrench, showing the relative disposition of parts. Fig. 2 is a detail perspective view of the toothed plate upon the shank of the wrench. Fig. 3 is a detail perspective view of the coperating toothed plate upon the shank of the jaw. Fig. 4 is a transverse Sectional view through the wrench."

'45 Corresponding and like parts are referred serial No. 154,720. (No einen.)

consists, essentially, of the shank 1, the rigid jaw 2, disposed at one end of the shank 1, and

the movable jaw 3, adjustable upon the shank 1. A handle 4 of a selected form may be utilized. The shank 1 is provided upon its up- 55 per side with a longitudinal recess 5, in which is disposed a removable toothed plate 6. The recess 5 is undercut, as shown at 5a, and this portion of the recess receivesl the beveled end portion 6a of the plate 6. The teeth 7 of the 6o plate 6 are disposed at proper intervals, and the end of the said plate opposite that end which is received by the undercut portion of the recess 5 extends so as to be held from outward' movement by the handle 4, the inner 65 end of the said handle embracing the extended end 6h of the said plate. The movable jaw 3 is provided with the common form of brackets 8, which embrace the shank 1 of the wrench,

as will be readily noted. A recess 9 is also 7o provided upon the jaw-shank 10, and this recess also receives a toothed plate 11,which is adapt-f ed to cooperate with the toothed plate 6 upon the shank 1 of the wrench to lock the` movable jaw in an ascertained position when it is desired to apply the wrench. Aplate 12, secured to the end of the jaw-shank 10,holds the toothed plate 11 rigidly in position. The rear bracket 8a is of such a size as to permit a certain'degree of movement of the rear portion of the jaw- 8o shank 10, and between the under side ofthe wrench-shank 1 and the inner faces of the rear portions of the brackets 8 and 8L aflat spring 13 is interposed, so as to normally hold the several toothed plates 6 and- 11 normally in 8 5 engagement. lThe spring 13 is provided with a bent'end portion 14, which is seated in a notch 15 upon one of the brackets and is thereby retained from displacement.

To adjust the wrench, it is necessary to eX- ercise a certain amount of pressure against the rear side of the rear bracket, which causes same to move toward the shank 1 and throws the toothed portions of the plates 6 and 11 from engagement with each other, and thereby permits adjustment of the jaw upon the shank in a manner which will be readily understood. In adjusting the movable jaw to cause same to move toward the fixed jaw it is only necessary to press the same toward the IOO said movable jaw, and the toothed portion of the plate 11 will ride over the toothed portion of the plate 6. Then the jaw 3 is to be moved in the reverse direction, pressure upon the rear side of the rear bracket, as before described, must be exerted to attain the desired result.

It Will be noted that should either of the toothed plates 6 and 1l be damaged through breakage or in any other Way the same may be readily removed and others replaced. This latter is considered a feature of essential irnportance to the invention.

Having thus described the invention, what is claimed as ne7 is- In a Wrench, the combination With a shank provided with a fixed jaw having a longitudinal recess disposed upon the upper side thereof, said recess being undercut at one end, a longitudinal toothed plate disposed Within the aforesaid recess having one end thereof eX tended beneath the undercut portion of the recess, a handle removably disposed upon the shank of the Wrench and embracing the opposite end of the removable toothed plate aforesaid to hold same in position, a movable jaw adjustable upon the shank of the wrench, brackets projected from the said jaw and em bracing the said shank, a recess provided upon the inner face of the shank of the movable jaw, a removable toothed plate disposed within the said recess and adapted to cooperate with the toothed plate upon the shank of the wrench to fix the movable jaw at an ascertained adjustment, and a removable plate secured to the end of the shank of the movable jaw and securing the toothed plate upon the said jaw from displacement, and a at spring interposed between the inner faces of the rear sides of the aforesaid brackets and adapted to cause normal engagement of the toothed plates upon the movable jaw and upon the shank of the Wrench.

In testimony whereof We affix our signatures in presence of two witnesses.

LEWIS ASH. [L. s.] HIRAM B. STEWART. Witnesses:

JAMES L. MOORE, THOMAS DION. v 

